Slender Man Suspect Plans to Plead Not Guilty by Reason Insanity

Court will look to set a trial in March or sooner if the parties are ready.

The girls were 12-years-old in 2014 when, authorities say, they lured their classmate into woods in Waukesha after a birthday sleepover and repeatedly stabbed her. The victim, who was also 12, was found along a road, bleeding from wounds that nearly killed her.